Which sequence is modeled by the graph below?

coordinate plane showing the points 2, 1; 3, 3; and 4, 9

a. an = one third(27)n − 1

b. an = 27(one third)n − 1

c. an = one third(3)n − 1

d. an = 3(one half)n − 1

Which sequence is modeled by the graph below?

coordinate plane showing the points 2, 1; 3, 3; and 4, 9

a. an = one third(27)n − 1

b. an = 27(one third)n − 1

c. an = one third(3)n − 1

d. an = 3(one half)n − 1